body {
    font: 16px/1.5 Helvetica Neue, Helvetica, Arial, Microsoft Yahei, Hiragino Sans GB,
    Heiti SC, WenQuanYi Micro Hei, sans-serif;
    margin: 0;
    width: 100%;
    height: 100vh;
    background-color: #000;
    background-image: radial-gradient(circle at top right, rgba(121, 68, 154, 0.13), transparent),
    radial-gradient(circle at 20% 80%, rgba(41, 196, 255, 0.13), transparent);
}

canvas {
    position: fixed;
    width: 100%;
    height: 100%;
    background: url("../image/back.png") center top;
    background-size: 100% auto;
}

/*标题属性*/
.title {
    /*position: relative;*/
    position: fixed;
    text-align: center;
    font-weight: bold;
    font-size: 28px;
    width: 100%;
    height: 60px;
    line-height: 60px;
    background-color: rgba(1, 1, 1, 0.5);
    z-index: 10;
}

.title > a {
    color: #c0c0c0;
    text-decoration: None;
    transition: 0.5s all;
}

.title > a:hover {
    color: #f37928;
    transition: 0.5s all;
}

.container_big {
    width: 900px;
    margin: 0 auto;
}

/*清除默认属性*/
ul, li {
    list-style: none;
    margin: 0;
    padding: 0;
}

p {
    margin: 0;
    padding: 0;
}

input, button {
    outline: none;
    border: none;
}

/*通用容器*/
.container {
    position: relative;
    width: 800px;
    margin: 20px auto 20px 17%;
}

/*背景*/
.wall {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    /* background: url("../image/back.png") no-repeat center top; */
    background-size: 100% auto;
    z-index: 0;
}

/*顶栏功能区*/
.header .container {
    height: 50px;
    margin-top: 80px;
    margin-bottom: 30px;
}

/*加号按钮*/
#add {
    position: absolute;
    display: inline-block;
    width: 50px;
    height: 50px;
    line-height: 50px;
    border-radius: 50px;
    text-align: center;
    font-size: 20px;
    color: #fff;
    /*background: rgba(30,144,255, 0.8);*/
    background: #409EFF;
    transition: 0.5s all;
    z-index: 1;
}

#add:hover {
    background: rgba(25, 130, 255, 1);
    transition: 0.5s all;
}

/*新任务输入框*/
#add-todo {
    position: absolute;
    left: 70px;
    height: 46px;
    width: 450px;
    font-size: 30px;
    padding-left: 10px;
    border-radius: 10px;
    border: 1px solid darkgray;
    color: rgba(30, 144, 255, 1);
    display: none;
    z-index: 1;
}

/*通用按钮*/
button {
    width: 50px;
    height: 50px;
    border-radius: 50px;
    font-size: 40px;
    color: #fff;
    z-index: 1;
}

/*减号按钮*/
#del {
    position: absolute;
    left: 550px;
    color: #fff;
    font-size: 20px;
    background: rgba(210, 20, 30, 0.8);
    transition: 0.5s all;
}

#del:hover {
    background: rgba(210, 20, 30, 0.93);
    transition: 0.5s all;
}

/*删除按钮*/
.todo-del {
    position: absolute;
    top: 0;
    right: -80px;
    border-radius: 10px;
    background: rgba(210, 20, 30, 0.8);
    transition: 0.5s all;
    display: none;
}

.todo-del:hover {
    background: rgba(210, 20, 30, 1.2);
    transition: 0.5s all;
}

/*清除所有任务*/
.footer button {
    position: absolute;
    font-size: 20px;
    background: rgba(210, 20, 30, 0.8);
    display: none;
}

.footer #del_done {
    width: 410px;
    left: 99px;
}

/*任务标签*/
li {
    position: relative;
    width: 600px;
    height: 60px;
}

/*任务文本*/
span {
    position: absolute;
    display: block;
    width: 600px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    /*border: 1px solid darkgray;*/
    margin: 0 auto;
    border-radius: 10px;
    background: #f9f9f9;
    /*transition: 0.5s all cubic-bezier(.46, 1, .23, 1.52);*/
    /*transition: 0.3s all;*/
    z-index: 2;
}

/* span:hover { */
    /*width: 603px;*/
    /*height: 52px;*/
    /*transition: 0.5s all cubic-bezier(.46, 1, .23, 1.52);*/
    /*transition: 0.3s all;*/
/* } */

/*任务类别*/
.group {
    color: #888;
    font-weight: 900;
    margin: 16px 0 16px 277px;
}

/*未完成任务*/
#todo-list .todo-text {
    color: #fff;
    font-weight: 900;
    background: rgb(95, 173, 253);
    transition: 0.3s all;
}

#todo-list .todo-text:hover {
    background: rgb(42, 133, 224);
    /* transform: translateY(-1px); */
    /*transform: translateX(5px);*/
    box-shadow: 0 2px 5px rgba(33, 33, 33, 0.8);
    transition: 0.3s all;
}

/*已完成任务*/
#done-list .done-text {
    /*text-decoration: line-through;*/
    /*font-size: 20px;*/
    color: rgba(233, 233, 235, 0);
    background: rgba(200, 200, 200, 0.4);
    transition: 0.4s all;
}

#done-list .done-text:hover {
    color: rgba(255, 255, 255, 0);
    /* background: rgba(200, 200, 200, 0.9); */
    /*transform: translateY(-3px);*/
    box-shadow: 0 2px 5px rgba(33, 33, 33, 0.3);
    transition: 0.3s all;
}

/*修改任务*/
li input {
    position: absolute;
    top: 0;
    left: 0;
    width: 601px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    font-size: 16px;
    color: #333;
    background: rgba(0, 0, 0, 0);
    margin: 0 auto;
    border-radius: 10px;
    z-index: 1;
}

#done-list input {
    color: rgba(111, 111, 111, 0.7);
}

.footer_br {
    width: 20px;
    height: 80px;
}

.group {
    display: none;
}